Revolving contact-switch.



' B. J. GUAY.' RBVOLVING CONTACT SWITCH. 'APPLICATION FILED JULY zo, i910. 1,044,378 Paten-ted Nov. 12, 1912. T 2 sums-SEEE 1.

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Mutig E. J. GUAY.

REVOLVING CONTACT SWITCH.. ApPLIoATIoN FILED JULY 2o, 1910.v

Patented N0v.12,1912-` 2 SHEETS-SHEET 2.

fEMWINMilllllllllllllA llllmmiml *Mvman!! wmf!! l InVe'nt-.o/ Emile JGLJaH.

Witnesses:

.s'rarns EMILE reunir, or LYNN; MASSACHUSETTS, Assienoa ro GENERAL ELECTRICY 1 COMPANY, A CORPORATION.. or naarvenir. i

S\vitcliesot which t-h'etolloivingv is speer.

tication. y

My invention relates to relays adapted for controlling the operation ot. electromagneti-v 'cally .operated switches, such as' the-mainsfwitches iinanalternating current 'series' .luminous arc lai'iipsysteiii,- the-circuits of which are to be periodically and momentarily.A opened to accomplish. the simultaneous feed ,otl all lamps in a ycircuit and thereby eliminate -iiiidue'tlickering of the lights and avoid the. use of. shunt coils' in the lamps.

f Tl'ie "purpose of myl inveiitioii'is to constructarelay in thefforin ot. a sivitch in which -tlie tendency orp they sloivly movingcontactsto draiv arcs is eliminated and Vtlie i l duration of closure of. the circuits'to be controlledfis 'entirelyindependent" ot the an gul'ar velocity of the driving parts, yand which. is `further characterized by its simplicity and -ruggedness' of construction and ability to take care of currents of t-lie` densities required in elect-roiiiagnetsffor op` erating large oilA switches than is the ordi-- nary time switch. as usually constructed With its delicate moving parts. v 'have made a svvitch which periodicallycloses the controlling circuits momentarily with .both a quick-make and a"quickbreak, the

periods, of loperation being dependent. upon the speed of the tlriViiigVnieanS..

In'the accompanying drawings, Figure 1 is a side .elevation or' a switchY embodying my invention together with a driving motor; Fig. 2 is a top plan vieiv of the switch and driving motor; Fig. 3 is a side elevation of the contacting membersin the operating positionyaiid Fig. 4l is a front vieiv of one of the contacts.

Referring to the'idrawings 1 indicates, a main `base or traine having short posts to which is secured by screw-bolts a supporting plate 2. This plate 2 carries the switch and drivingV means. and over them lits a. glass inclo'fsingv case 3 onto the frame 1, as indicated, a gasket 4 maintaining avvater-tiglit joint betvveen the rim of thefranie and an internal rib'on case 3. `At 4 are indicated l Specification of Letters Patent.

Application led'JiiIly 20, 1910. Serial No. 572,829.

To these ends I'- nnvoLviNG oonracrfswrrron atented Nev. 12, 1912.

arms rigidly attacl'ifed to the-traine 1 and suitablyequipped 'at their freeA 'ends for holding the case gsecurely against the gasket Il. f

A revolving drum "5 lmounted upon a shaft 6 carries, referably. integrally tliereivitln'a number lo lingers 7, A'7, 7,5 La finger for each vcircuit to be controlled, 'thesengerspreferably having removable contacts 8, 8, 8, `8 secured thereto by screw-bolts, or in. airy convenienty manner.y rhe shaft 6 is journaled at vone end in an upright S) carried byfa v.bracket 10, and at the other end iii the Wall plate 11 of thisbracket7 secured to plate/Q.

A convenient driving means tordruin aiid its 'iiiigesconsists ofia' shaded pole motor? Whose armature .is indicated at 12 and its 'field at 1.3. The speed of this ni'otor may be variedivi'thin certain limits by adjusting the position ci. retarding magnets 1l Whose poles embrace the armature 4or disk '12. rlhis adjustment is made byiii'eans ot yscrevvs 14 whichA extend through c cular slots in the magnet supports'and's re'iv into lugs on plate 2,'- the 'magnet- `supports being piv oted at'13 to siniilar lugs "iiplate 2. A train ofA reduction: gearsk toi1K reducing .the

speed 'of the iiifotor tothe required speed of druin 5 consists of a' gear vvlieel 15 meshing with apin'ion on`the motor shaft, a gear. Wheel 16 meshing with wher-1515, a gear 17 meshing with a pinion on shaft of wheel 16. a. gear 1S nieshin'gvith a' pinion on shaft of Wheel 17, and a gear ivheel 19 mounted upon shaft 6 and meshing `with gear 18..

Normally stationary levers 20, one for each relvolving'tinger 7, are independently mounted uponashaft les a bearing, this shaft being carried byfa bracket '22 secured to plateA 2 and an upright thereon.- Each lever has a doivnvvardly"projecting lug "23 ivliich normally rests against bracket Upon these levers 2O are v'ieldiiigly iiioiiiited contacts '24, which respectively form sides. ot the circuits to be controlled. These con-v tarts 9st are preferably mounted upon and insulated from tliehfree ends ot'. levers 25 ivliicliiii turn are. nioiintedupoii levers. 20.

and are attached at their loiver eiids byV springs 2G to .lugs Q3, each lever 9.5 heilig vtiilcriimed betiveen tivo iaivs '2T on the free end of. a lever 2O and provided with expanded heads ivliicli oveilievtlie upper edges ot the jaivs 2T so that the forward iiioveiiient is limited thereby. The springs 26 main- .y

tain irnrbut yielding en revolvingl contactsfan their correspondmg contacts 24' when the latter slide past .une contacts 8, as will hereafter be explained. gio the contacts'A arerattached flexible con.- nnct rs' 28, as shown,"each conductor forming being connected. to va terminal 2t on the main base l. The other sides ofthese cir'- -cuits are joined respectively to a common dropping to thedotted position shown in Fig. Bland the Contact 24 making a quick engagement with contact 8. The lever 20 will not remain in this dotted position, however, since by its own Weight it pulls contact- 24 down past Contact 8 against the tension of spring 26, thereby resulting in a momentary closure anda quick break in the circuit.

I do not desire to restrict myself to the particular form or arrangement. of parts shown and described, since -it is apparent .they may be changed and modiied without departing from my invention.

, IVhat I claim as new and deslre to secure -by Letters Patent of the United States, isp- 1 In iin-electric switch, the'combination ofnormally stationarybiased arms, rotary Uements between side of acircuit to be controlled and 'of the arms therefrom.'v

2. In an electric switch, the-combination -ot a number of normally .stationary arms ffulcrumed at one end, a correspondingnumber4 rotary contact fingers arrangecbto engage and tilt thel free ends vot said arms, and spring.- controlled levers mounted on said y arms and provided with contacts operating to wipe across said contact lingers u pon disengagement of said arms therefrom.

In an electric switch, the combination of a number of stationary arms fulcrumed at one' end, a corresponding number o't` revoluble contact fingers arranged to engageA and t-iltthe'free ends ofl said arms, Contact levers pivoted to the free ends of said arms, and springs connected to the lower ends of said levers and to said'arms.

4. Inv an electric switch, the combination of a biased arm, a revoluble' contact linger 'arranged to engage and move said arm inoppositi'on to its biasing force, and a springpressed Contact mounted on said arm and -.operating to make wiping engagement with saidinger as the arm returns to normal position ipon escapmg'tbcrefrom.

In rvltness whereof, I have hereunto set my hand this eighteenth dav of July, 1910. F

EMILE J. GUY. IVitnesses I Jon-n A. 'l\ICllIANUs, r.. CHARLES A. BAR'NARD. 

